JPH063175Y2 - Float made of synthetic resin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a float made of synthetic resin for use in a vaporizer.

[Conventional technology]

As this kind of synthetic resin float, a float molded with a foam material, or the outer peripheral surface of a cap f ′ attached to a float body f molded into a container as shown in FIGS. 30 and 31 is melted. (Refer to FIG. 32) There is one that completes the float F. The synthetic resin float described in Japanese Patent Application Laid-Open No. 62-20986 already proposed by the present applicant as belonging to the latter is a step on the inner surface of the float main body f as shown in FIGS. 33 to 35. part f _a and the junction f _c is provided in the upper inner side surface of the stepped portion f _a with the receiving portion f _b for supporting the outer peripheral surface of the cap f 'is formed, the stepped portion f _a and the receiving portion f _b After fitting the float main body f and the cap f ′ by the joint part f _c (see FIG. 35), when the joint part f _c is melted by a melter not shown, the downward displacement of the cap f ′ is caused. It is configured so as not to cause a bonding failure due to.

[Problems to be solved by the invention]

FIG. 36 shows a fusion state during heating in such a conventional synthetic resin float. In conjunction to the melting of the joint portion f _c by heating plate P of the melter, cap f 'is then attributed to the nature and shape of the synthetic resin, easy shrinkage, warping or twisting or the like occurs. This tendency becomes more remarkable as the cap f ′ is formed thinner, and a float having a wall thickness of only about 0.7 mm causes remarkable deformation. That is, the 37th
As shown in the figure, the cap f'is warped in its outer peripheral portion (see arrow A in the figure), and its both ends are widened as shown in FIG. 38 (see arrow B, B'in the figure). ), Etc., it deforms in the left-right and up-down directions and proper fusion is not achieved. On the other hand, theoretically, such a problem can be mitigated by simultaneously melting the joint part f _c at a uniform temperature over the entire circumference of the cap f ′, but it is practically difficult to set this condition. Therefore, if the joint portion f _c is locally deformed, the cap f ′ may be lifted or warped as a whole, and there is a possibility that a part of the joint portion f _c may be defectively fused.

In view of such circumstances, an object of the present invention is to provide a synthetic resin float capable of exhibiting excellent functions by eliminating defective fusion between the float body and the cap.

[Means and Actions for Solving Problems]

As shown in FIGS. 1 and 2, the synthetic resin float according to the present invention has rib-like projecting pieces 6 and 16 formed on the inner surface and the outer surface of the side wall of the float body f and the cap f '. When the cap f ′ is fused (see FIG. 3), the side surfaces of the protruding pieces 6 and 16 and the protruding piece 16 are joined together.
And the side wall of the float body f are in contact with each other to suppress deformation of the cap f'due to melting. That is, as shown in FIG. 4, even if the outer peripheral portion of the cap f ′ is warped in the direction of arrow A, the projecting piece 16 of the cap f ′ contacts the side wall of the float body f, so that the cap f ′ is prevented from rising. It Further, as shown in FIG. 5, the movement of the cap f'in the direction of arrow B (this corresponds to the direction of arrows B and B'shown in FIG. 38) also causes the protruding piece 16 of the cap f '.
And the side surfaces of the projecting piece 6 of the float body f are prevented from contacting each other, and the accurate alignment between the float body f and the cap f ′ at the time of fusion is maintained, and proper and reliable fusion is performed. Thus, not only the fusion failure is completely prevented, but also the rigidity is improved, and an excellent function as this kind of float can be exhibited.

〔Example〕

Hereinafter, a first embodiment of the synthetic resin float according to the present invention will be described with reference to FIGS. 6 to 16. In the figure, F is a synthetic resin float composed of a float body f and a cap, and FIG. 6 shows a state in which both are fitted. Reference numeral 1 is a bottom wall of the float body f, 2 is an outer wall, 3 is an inner wall, 4 is a recess defining an inner chamber of the float F, and 5 is a hole formed by the inner wall 3. The cap f ′ is fitted between the outer wall 2 and the inner wall 3 at the opening of the recess 4. Reference numeral 6 denotes a first projecting piece formed so as to project from the inner side of the outer wall 2, and a recess 6b into which a projecting piece of a cap f'to be described later is fitted is provided in an upper end portion 6a formed in a bifurcated shape. 7,
Reference numeral 7'denotes a second projecting piece formed inside the outer wall 2 and outside the inner wall 3, respectively, and 8 a third projecting piece formed so as to project from the outer side of the inner wall 3. It has a notch recess 8b configured similarly to. Reference numeral 9 is a floating arm, and 10 is a bearing portion.

11 is the crown of the cap f ', 12 is the outer wall, 13 is the inner wall,
Reference numeral 14 is a rib formed by connecting the outer wall 12 and the inner wall 13 in the crown portion 11, and 15 and 15 'are fusion-bonding pieces formed over the entire circumferences of the outer wall 12 and the inner wall 13 of the cap f'. The cap f'is fitted to the outer wall 2 and the inner wall 3 of the float body through the fusion-bonding pieces 15 and 15 '. A fourth projecting piece 16 is formed so as to project from the outside of the outer wall 12 of the cap f ′ at a position corresponding to the cutout recess 6b of the first projecting piece 6 and is fitted into the cutout 6b (see FIG. 8). ), 17 corresponding to the first projecting piece 6, the second projecting piece 7, 7'and the third projecting piece 8 of the float body f so as to come into contact with any of the walls 7a, 7b of the cap f '. It is a fifth protruding piece protruding from the side wall of the outer wall 12. The fifth projecting piece is formed outside the inner wall 13 and the outer wall 12 of the cap f'corresponding to the third projecting piece 8 of the float body f. The third projecting piece 16 and the third projecting piece 16 are paired with the second projecting pieces 7 and 7'and the fifth projecting piece 17, respectively.

Since the synthetic resin float F according to the first embodiment is configured as described above, after the float body f and the cap f ′ are fitted, they are melted along the fusion pieces 15, 15 ′ of the cap f ′. To be As is apparent from the fused state shown in FIGS. 9 and 12, the fourth projecting piece 16 of the cap f ′ is the cutout recess 6 of the first projecting piece 6 of the float body f.
The side surfaces 16a and 16b of the recess 6b can be brought into contact with the side surface of the recess 6b. Due to such abutment, the deformation of the cap f'in the left-right and up-down directions is suppressed as shown in FIG. 10, and the alignment between the float main body f and the cap f'is maintained even after fusion bonding. This lateral restraining effect is
It can likewise be brought about by the second projecting piece 7, 17 of the float body f and the cap f ′ as shown in the figure (or FIG. 14). Further, even if the outer peripheral portion of the cap f ′ is warped (see the arrow A in FIGS. 9 and 12), the first and second projecting pieces 16 and 17 of the cap f ′ are not covered by the outer wall 2 of the float body f. Since the cap f ′ in the figure is prevented from being deformed in the left-right direction, it is prevented from floating from the float main body f, and the same applies to the float main body f and the third projecting piece 8. It is possible to obtain the function and effect, and thus, it is possible to surely prevent some defective fusion.

Incidentally, FIGS. 15 and 16 show a modified example of the protruding piece formed on the float body f. Similar effects to the above can be obtained when the protruding pieces 7'and 7'are provided on the outer walls 2 and 3 so as to sandwich the protruding pieces 16 and 17 on the cap f'side from both sides as in this example.

17 and 18 show a second embodiment. In this example, the relationship between the float body f and the protruding piece of the cap f'in the first embodiment is reversed. That is, taking the second projecting piece 7 of the float body f as an example, when the cap f'is fitted, the upper part of the second projecting piece 7 is provided on the cap f'from both sides, and the projecting piece 17 'is provided. It is configured to be sandwiched by 17 '. Furthermore, the thickness t ₁ of the protruding piece 7
And the wall thickness t ₂ of the outer wall 2 of the float body f is t ₁
It is set such that <t ₂ . Also in the case of this example, the deformation or the like due to the fusion of the cap f'is prevented, and the same effect as that of the first embodiment can be obtained.

19 and 20 show a third embodiment. In this example, for example, the first protruding piece 16 of the cap f ′ (see FIG. 8)
Since the tip portion 16c of the cap is configured to fit into the recess 2a formed by forming a part of the outer wall 2 of the float body f into a thin wall, the cap f'and the float body f can be positioned even after fusion. It can be reliably maintained and deformation of the cap f ′ can be prevented.

FIGS. 21 to 29 show a fourth embodiment. In this embodiment, the fourth projecting piece 18 (and / or 18 ') projecting from the lower end surface of the outer peripheral portion of the cap f'is the above-mentioned each. Similar to the embodiment, a configuration is shown that is associated with the second projecting piece 7 and the like on the float body f side. That is, in FIG. 21 and FIG. 22, the cap f ′ is such that the upper part of the second projecting piece 7 of the float body f is the fourth projecting piece 18, 1 from both sides.
It is prevented from being deformed due to fusion by being sandwiched by 8 '. Further, as shown in FIGS. 23 to 25, one of the side walls 18a and 18b of the fourth projecting piece 18 can be brought into contact with the second projecting piece 7 on the float body f side. Further, as shown in FIGS. 26 and 27, the fourth projecting piece 18 is a projecting piece 7 ', 7'on the side of the float body f'.
28, and the tip end portion 18c of the protruding piece 18 may be fitted into the recess 2a formed in the outer wall 2 as shown in FIG. 28 and FIG. The same effect as the above can be obtained. As a third embodiment (not shown), the above is the first of the float body f,
The third projecting pieces 6 and 8 are formed in a plate shape, and the fourth projecting piece 16 of the cap is formed so as to come into contact with the side surfaces of the first and third projecting pieces 6 and 8. However, the present invention is not limited to this. Alternatively, the first and third projecting pieces may be formed in a tubular shape, and the fourth projecting piece 16 may be formed in a rod shape so that the fourth projecting piece 16 can be inserted into the tube. In this case, the hole of the cylinder may have various shapes such as ◯ Δ, and a taper may be provided to facilitate the fitting. Furthermore, the cross-sectional shape of the protruding piece is not limited to a rectangular shape or a cylindrical shape, and may be another shape such as a polygonal shape, a trapezoidal shape, or a curved shape.

Incidentally, the first projecting pieces 6 and 16, the second projecting pieces 7 and 17, the third projecting piece 8 and the like in each of the above-mentioned embodiments are appropriately selected from each pair and may be formed in a desired combination if necessary. Can be configured.

[Effect of device]

As described above, the synthetic resin float of the present invention can be applied to vaporizer floats of any shape to be formed by heat fusion, and the following various effects can be obtained.

1. It is possible to prevent the cap from being deformed by providing a protruding piece at a portion where the cap is largely deformed due to the influence of heat during fusion.

2. By preventing such deformation, the entire fused portion is properly fused, so that the rigidity of the entire float is increased and the durability is improved.

3. With this improvement in rigidity, the float can be formed into a thin wall, so that the effects of shrinkage of each member and internal stress during molding can be reduced, which improves the molding accuracy of the cap and float body.

4. Due to the improvement of the molding accuracy, the fitting accuracy of the cap with the float body is also improved, and the fused state becomes extremely good.

5. When the cap is fitted to the float body and temporarily assembled, each protruding piece can serve as a guide, so that misassembly or the like can be prevented and the assembly work can be facilitated.

6. After this temporary assembly, the fitting accuracy is improved and the cap is prevented from falling off the float body, and the fusion workability is improved.

7. When fusing, the influence of heat secondary irradiation by the heating plate of the fusing machine can be suppressed, and the setting range of fusing conditions such as temperature and pressure, which had to be limited in the past, can be expanded. Conditions can be set.

8. Since the effect can be sufficiently exhibited by providing the protruding piece only at a portion where warpage or deformation due to fusion bonding is large, the weight of the float can be extremely effectively reduced.

9. The conventional molding die can be partially modified and reused, which allows the conventional die to be used, thus reducing costs.

10. Since the protruding piece to be provided is itself lightweight and a sufficient number can be obtained if it is installed in the proper place, the increase in weight due to providing the protruding piece is slight, and the float as a whole is Since the position of the center of gravity does not change, it does not affect the function as a float.

The carburetor equipped with the float made of synthetic resin of the present invention is used not only for general purpose but also for motorcycles, passenger cars, inboard and outboard motors, etc., but the above-mentioned effects have advantages such as improvement in performance as a carburetor. is there.

[Brief description of drawings]

1 to 5 are views for explaining the principle for preventing deformation of the cap according to the present invention. FIG. 1 is a perspective view of a protruding piece provided on the cap, and FIG. 2 is a float main body. FIG. 3 is a perspective view of the protruding piece provided, FIG. 3 is a vertical cross-sectional view of the outer peripheral portion of the float showing a fusion bonding state, and FIGS. 4 and 5 are views for explaining the deformation preventing action of the cap by the protruding piece. 16 to 16 relate to a first embodiment of the synthetic resin float according to the present invention, FIG. 6 is a perspective view of the float, FIG. 7 is an exploded perspective view of the float of FIG. 6, and FIG. 8 is the present invention. FIG. 9 is a cutaway perspective view showing a fitted state of the float main body provided with the first projecting piece and the cap, FIG. 9 is a longitudinal sectional view showing a fused state of the outer peripheral portion of the float, and FIG. 10 is FIG. 11 is a cross-sectional view taken along line XX of FIG. 11, and FIG. 11 shows a float body provided with a second protruding piece and a cap. Broken perspective view showing a fitting state of the flop,
FIG. 12 is a vertical sectional view showing a fused state of the outer peripheral portion of the float,
13 and 14 are sectional views taken along lines XIII-XIII and XIV-XIV in FIG. 12, and FIG. 15 is a vertical section of the outer peripheral portion of the float showing a modified example of the protruding piece to be formed on the float body side. FIG. 16 is a sectional view taken along the line XVI-XVI in FIG. 15, FIG. 17 is a vertical sectional view showing a fused state of the outer peripheral portion of the float according to the second embodiment, and FIG. 18 is a sectional view of FIG. XVIII
-XVIII sectional view, FIG. 19 is a longitudinal sectional view showing a fused state of the outer peripheral portion of the float according to the third embodiment, FIG. 20 is a sectional view taken along line XX-XX of FIG. 19, FIG. To FIG. 29 relate to the fourth embodiment, FIG. 21 is a longitudinal sectional view of the outer peripheral portion of the float provided with the fourth projecting piece, and FIG.
1 is a sectional view taken along the line XXII-XXII, FIG. 23 is a longitudinal sectional view of the outer peripheral portion of the float showing a modified example of the fourth projecting piece, and FIGS. 24 and 25 are lines XXIV-XXIV in FIG. And a cross-sectional view taken along line XXV-XXV, FIG. 26 is a vertical cross-sectional view of the outer peripheral portion of the float showing still another modification of the fourth projecting piece, and FIG. 27 is a cross-section taken along line XXVII-XXVII in FIG. FIG. 28 is a vertical cross-sectional view of the outer peripheral portion of the float showing a recess provided in the outer wall of the float main body into which the fourth protruding piece is fitted, and FIG. 29 is a cross-sectional view taken along line XXIX-XXIX of FIG. 28. 30 to 38 relate to a conventional float, FIG. 30 is a plan view of the float, FIG. 31 is a side view of the float, and FIG. 32 is a vertical cross-sectional view showing a fused state of an outer peripheral portion. FIG. 33 is a plan view of the float body, and FIG. 34 is a receiver formed on the inner wall of the float body. Partially enlarged plan view of the parts, the third
FIG. 5 is a vertical cross-sectional view showing a fitted state of the float body and the cap, FIG. 36 is a view showing a fusion process by a heating plate of the fusion machine, and FIGS. 37 and 38 are views of the fusion-based cap. It is the longitudinal cross-sectional view and the top view of a cap of an outer peripheral part which respectively show a deformation | transformation state. 1 ... bottom wall, 2 ... outer wall, 3 ... inner wall, 4 ... recess,
6, 16 ... First protruding piece, 7, 17 ... Second protruding piece, 8 ... Third protruding piece, 11 ... Crown, 12 ... Outer wall, 13 ... Inner wall, 15, 15 ′ …… Fused piece, 18 ……
Fourth protruding piece, F ... Float, f ... Float body,
f '... Cap.

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin float in which an outer peripheral portion of a cap fitted to a float body is melted to be integrated, and a plurality of pairs of projecting pieces are provided on an inner surface of a side wall of the float body and an outer surface of a side wall of the cap. And a pair of projecting pieces contact each other at their side surfaces when the float body and the cap are fitted to each other.